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| Section | Objectives |
|---|---|
| Topic 1: Cybersecurity Fundamentals | - Principles - Terminology - Core Concepts |
| Topic 2: Security Governance | - Compliance - Risk Management |
| Topic 3: Identity and Access Management | - Authentication - Authorization |
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質問 # 46
What is defined as an internal computerized table of access rules regarding the levels of computer access permitted to login IDs and computer terminals?
正解：B
解説：
An Access Control List (ACL) is a structured, system-maintained list of authorization rules that specifies who or what is allowed to access a resource and what actions are permitted. In many operating systems, network devices, and applications, an ACL functions as an internal table that maps identities such as user IDs, group IDs, service accounts, or even device/terminal identifiers to permissions like read, write, execute, modify, delete, or administer. When a subject attempts to access an object, the system consults the ACL to determine whether the requested operation should be allowed or denied, enforcing the organization's security policy at runtime.
The description in the question matches the classic definition of an ACL as a computerized table of access rules tied to login IDs and sometimes the originating endpoint or terminal context. ACLs are central to implementing discretionary access control and are also widely used in networking (for example, permitting or denying traffic flows based on source/destination and ports) and file systems (controlling access to folders and files).
An Access Control Entry (ACE) is only a single line item within an ACL (one rule for one subject). A "Relational Access Database" is not a standard security control term for authorization tables. A "Directory Management System" manages identities and groups, but it is not the same as the enforcement list attached to a specific resource. Therefore, the correct answer is Access Control List.
質問 # 47
Which organizational resource category is known as "the first and last line of defense" from an attack?
正解：B
解説：
In cybersecurity guidance, employees are often described as the first and last line of defense because human actions influence nearly every stage of an attack. They are the first line since many threats begin with user interaction: phishing emails, malicious links, social engineering calls, unsafe file handling, weak passwords, and accidental disclosure of sensitive information. A well-trained user who recognizes suspicious requests, verifies identities, and reports anomalies can stop an incident before any technical control is even engaged.
Employees are also the last line because technical protections such as firewalls, filters, and endpoint tools are not perfect. Attackers routinely bypass or evade automated defenses using stolen credentials, living-off-the-land techniques, misconfigurations, or novel malware. When those controls fail, the organization still depends on people to apply secure behaviors: following least privilege, protecting credentials, using multifactor authentication correctly, confirming out-of-band requests for payments or data, and escalating unusual activity quickly. Incident response, containment, and recovery also depend on humans making correct decisions under pressure, following documented procedures, and communicating accurately.
Cybersecurity documents emphasize that a strong security culture, regular awareness training, role-based education, clear reporting channels, and consistent policy enforcement reduce human-enabled risk and turn employees into an effective security control rather than a vulnerability.
質問 # 48
Which of the following should be addressed in the organization's risk management strategy?
正解：B
解説：
An organization's risk management strategy is a governance-level artifact that sets direction for how risk is managed across the enterprise. A core requirement in cybersecurity governance frameworks is clear accountability, including executive ownership for risk decisions that affect the whole organization. Assigning an executive responsible for risk management establishes authority to set risk appetite and tolerance, coordinate risk activities across business units, resolve conflicts between competing priorities, and ensure risk decisions are made consistently rather than in isolated silos. This executive role also supports oversight of risk reporting to senior leadership, ensures resources are allocated to address material risks, and drives integration between cybersecurity, privacy, compliance, and operational resilience programs. Without an accountable executive function, risk management often becomes fragmented, with inconsistent scoring, uneven control implementation, and unclear decision rights for accepting or treating risk.
Option A can be part of a strategy, but the question asks what should be addressed, and the most critical foundational element is enterprise accountability and governance. Option B is too granular for a strategy; selecting controls for each IT asset belongs in security architecture, control baselines, and system-level risk assessments. Option C is typically handled in incident response and breach management plans and procedures, which are operational documents derived from strategy but not the strategy itself. Therefore, the best answer is the assignment of an executive responsible for risk management across the organization.
質問 # 49
Which of the following should be addressed by functional security requirements?
正解：C
解説：
Functional security requirements define what security capabilities a system must provide to protect information and enforce policy. They describe required security functions such as identification and authentication, authorization, role-based access control, privilege management, session handling, auditing/logging, segregation of duties, and account lifecycle processes. Because of this, user privileges are a direct and core concern of functional security requirements: the system must support controlling who can access what, under which conditions, and with what level of permission.
In cybersecurity requirement documentation, "privileges" include permission assignment (roles, groups, entitlements), enforcement of least privilege, privileged access restrictions, elevation workflows, administrative boundaries, and the ability to review and revoke permissions. These are functional because they require specific system behaviors and features-for example, the ability to define roles, prevent unauthorized actions, log privileged activities, and enforce timeouts or re-authentication for sensitive operations.
The other options are typically classified differently. System reliability and performance/stability are generally non-functional requirements (quality attributes) describing service levels, resilience, and operational characteristics rather than security functions. Identified vulnerabilities are findings from assessments that drive remediation work and risk treatment; they inform security improvements but are not themselves functional requirements. Therefore, the option best aligned with functional security requirements is user privileges.
質問 # 50
If a threat is expected to have a serious adverse effect, according to NIST SP 800-30 it would be rated with a severity level of:
正解：D
解説：
NIST SP 800-30 Rev. 1 defines qualitative risk severity levels using consistent impact language. In its assessment scale, "Moderate" is explicitly tied to events that can be expected to have a serious adverse effect on organizational operations, organizational assets, individuals, other organizations, or the Nation.
A "serious adverse effect" is described as outcomes such as a significant degradation in mission capability where the organization can still perform its primary functions but with significantly reduced effectiveness, significant damage to organizational assets, significant financial loss, or significant harm to individuals that does not involve loss of life or life-threatening injuries. This phrasing is used to distinguish "Moderate" from "Low" (limited adverse effect) and from "High" (severe or catastrophic adverse effect).
This classification matters in enterprise risk because it drives prioritization and control selection. A "Moderate" rating typically triggers stronger treatment actions than "Low," such as tighter access controls, enhanced monitoring, more frequent vulnerability remediation, stronger configuration management, and improved incident response readiness. It also helps leaders compare risks consistently across systems and business processes by anchoring severity to clear operational and harm-based criteria rather than subjective judgment.
質問 # 51
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